Clamp for fuses, relays, etc.



Feb. 1, 1944.

C. E. HANNY CLAMP FOR FUSES, RELAYS, ETC

Filed Sept. 24, 1942 Patented Feb. 1, 1944 CLAMP FOR FUSES, RELAYS, ETC.

Charles E. Hanny, Plalnville, Conn., assignor to The Trumbull ElectricManufacturing Company, Plainville, Coma, a corporation of ConnecticutApplication September 24, 1942, Serial No. 459,503

7Claims.

This invention relates to clamps for fuses, relays, etc.

An object of the invention is to provide a clamp of this character thatis simple and rugged in construction, inexpensive to manufacture andlight in weight.

Another object is to provide a clamp of this kind having a movable screwmember with means for bracing the clamp against the pressure of thescrew.

Another object is to prevent endwise movement of the fuse or the like.

In its simplest form, the clamp consists of three parts, namely, a mainsupport, a hooded seat or abutment and a clamp screw. The support andthe screw seat or abutment are formed of sheetmetal and suitably securedtogether by welding or riveting at a' single point and interlockedadjacent the clamp screw. Two forms are shown herein to accommodaterespectively a fuse or relay having a cylindrical or ferrule typeterminal and one having a flat blade type terminal.

Fig. l is a perspective view showing a pair of fuse clamps mounted forholding a cartridge typo fuse or relay with ferrule type ends orterminals.

Fig. 2 is an end view of one of theclamps, part being broken away andparts being shown in section.

Fig. 3 is an edge view of the clamp of Figs. 1 and 2.

Fig. 4 is a sectional view of the same on the plane of the line 4-4 ofFig. 2.

Fig. 5 is an end view of a type of clamp for holding a blade typeterminal.

Fig. 6 is a detail view of the main support of Fig. 5.

Fig. 7 is an edge view of the clamp of Figures 5 and 6.

The main support 9 has a foot ID by which it may be secured to asuitable base. .lfms support has a seat II on which rests the terminalof the ruse or relay.

The seat 12 for the clamp screw 13 is in the form of a hood of U-shapedsection and has nanges it which embrace the upright of the support 9 andare welded or riveted to it at it. 'me seat 12 also has a notch i6adjacent the screw into which the tip ll of the support 9 nts so thatthe thrust or the screw against the fuse terminal will be resisted bythe engagement of the shoulder l8 of the hood against the tip it of thesupport as well as by the connection IS. The outer wall IQ of the hoodserves as a stop to limit the longitudinal movement of the'fuse or thelike.

In the form of Figs. 5 to 7, the support 20 has a seat 2i for the fuseblade 2|. The clamp seat 22 for screw 23 is similar to that of Figs. 1to 4 and is riveted or welded at 24 to the support and interlocked withit at 25.

In both forms, it will be seen that the clamp screw seat member is ofchannel-like section so as to afford a maximum strength for a minimumamount of metal. There is also a rigid connection between the supportand the clamp seat produced by the interlock at the top and the singlerivet or weld at the bottom.

In both forms, portions of the screw seat act as stops to limit endwisemovement of a fuse inserted in a pair of the clamps. In the form shownin Figs. 1 to 4, this stop is on an inside surface of the seat memberbut near the outer edges of each pair of clamps. In the form shown inFigs. 5 to 7, the stop is simply the outside surface of the seat memberbetween each pair of clamps.

From the foregoing it will be seen that my improved fuse clamp issimple, light in weight, rugged and compact, and inexpensive tomanufacture; that it permits easy insertion and removal of the fuses andinsures a full contact under pressure and proper alignment of fuseterminals.

I claim:

1. A fuse clamp comprising a flat sheet metal support having a seat forthe terminal of a fuse and a sheet metal U-shaped hood member extendingover said seat, parts of said hood member being secured to said supportadjacent said seat, a clamp screw in the hood member to engage a fuseterminal supported in said seat and another part of said hood memberhaving means interlocked with said support adjacent said screw.

2. A fuse clamp comprising a support having a seat portion for a fuse, asubstantially ushaped hood member straddling said support and having ascrew-threaded opening for a clamping screw, means of connection betweensaid support and hood member adjacent said seat portion and means of.connection between said support and hood member adjacent saidscrew-threaded opening for resisting the pressure of the clamping screw.

3. A fuse clamp comprising a support having an upright portion and aseat portion for supporting the end of a fuse, a substantially U- shapedhood member, the walls of said hood member straddling said uprightportion and secured thereto adjacent the seat portion, the cross pieceof said hood member having a screw-- threaded opening for receivingaclamping screw and a slot and stud connection between said uprightportion of the simport and said cross piece of the hood member adjacentsaid screwthreaded opening for resistingthe pressure of the clampingscrew.

4. A fuse clamp comprising a support having an upright pqrtion and aseat for supporting the end of a fuse, a substantially U-shaped hoodmember forming a seat for a clamping crew, the spaced walls of said hoodmember straddling said upright and one wall thereof extending beyond theedge of said upright portion to form a stop for preventing endwisemovement of the fuse.

5. A fuse clamp comprising a, support having an upright portion and anarcuate seat portion for a fuse, a substantially U-shaped hood memberhaving a portion straddling said upr ht and having a cross-piece abovethe seat with a clamping screw for engagement with a fuse, means ofconnection between said support and hood member adjacent said seatportion and means of con- 25 nection between said support and hoodmember adjacent said seat portion for resisting the pressure of theclamping screw.

6. A fuse clamp comprising a support having a base and an upright, saidupright having a fuse seat. a hood having side arms rigidly secured tothe support adjacent the base and a crosspiece connecting the side armsand interlocked with the upright, a clamp screw adjustable in saidcross-piece toward and from the fuse seat. said crossspieee and uprighthaving cooperating partstoresistthebackward thrustofthe clamp screwagainst a fuse supp rted in said seat.

7. A fuse clamp comprising a support having an upright with a fuse seat,a hood straddling the upright and secured to the support, said uprightand hood having interlocking parts to prevent rotation of the hood onthe support, said hood having a wall extending parallel with the 20upright opposite the fuse seat to serve as a stop CHARLESRHANNY.

